Ryan Malloy
5870e2f7ee
Replaces the read-only "conditions present but not editable" banner
with a real editor for the cond / cond2 u16 fields on TIMED / EVENT /
YEARLY programs.
Compact-form conditions split into five families per
clsText.GetConditionalText (clsText.cs:2224-2274):
none — cond = 0 (no inline condition)
misc — family 0x00, low nibble = enuMiscConditional
(NONE / NEVER / LIGHT / DARK / PHONE_* / AC_POWER_* /
BATTERY_* / ENERGY_COST_*)
zone — family 0x04, low byte = zone, bit 0x0200 = NOT_READY
unit — family 0x08, low 9 bits = unit, bit 0x0200 = ON
time — family 0x0C, low byte = time-clock #, bit 0x0200 = enabled
sec — family >= 0x10, bits 8-11 = area, bits 12-14 = security mode
types.ts gains decodeCondition / encodeCondition + the
MISC_CONDITIONALS / SECURITY_MODE_NAMES enums. Round-trip is exact:
decode(encode(c)) === c for every supported family.
UI: two condition slots per editor (matching the two u16 fields on
the wire). Each slot has a family-picker dropdown that swaps the
sub-fields (zone picker + secure/not-ready, unit picker + on/off,
area picker + security mode, time-clock # + enabled/disabled, misc
condition picker, or "none"). Picking a family seeds sensible defaults
(NEVER for misc, first zone secure, first unit ON, area 1 disarmed,
time clock 1 enabled).
Object pickers reuse the same _bucketWithPreserve helper introduced
for the action editor, so out-of-range zone/unit/area refs in inline
conditions keep their original value with a "preserve" label.
Live smoke test against the real panel: slot #1's actual condition
"AND IF Time clock 4 is disabled" now decodes into the editor as
Family=Time clock / # = 4 / Is = disabled — exactly the on-disk state.
Frontend bundle: 63 KB minified (up from 56 KB with the new editor
section + cond helpers).
omni-pca
Async Python client for HAI/Leviton Omni-Link II home automation panels — Omni Pro II, Omni IIe, Omni LTe, Lumina.
Includes a Home Assistant custom component (custom_components/omni_pca/).
Project home: https://github.com/rsp2k/omni-pca Documentation: https://hai-omni-pro-ii.warehack.ing/
Status
Alpha. Built from a full reverse-engineering of HAI's PC Access 3.17 (the Windows installer/programmer app). The protocol layer captures two non-public quirks that public Omni-Link clients miss:
- Session key is not the ControllerKey. Last 5 bytes are XORed with a controller-supplied SessionID nonce.
- Per-block XOR pre-whitening before AES. First two bytes of every 16-byte block are XORed with the packet's sequence number.
The full byte-level protocol spec lives at https://hai-omni-pro-ii.warehack.ing/reference/protocol/.
Install
pip install omni-pca
# Or with uv
uv add omni-pca
For Home Assistant users, install the integration through HACS — see the HA install how-to.
Quick start (library)
import asyncio
from omni_pca import OmniClient
async def main():
async with OmniClient(
host="192.168.1.9",
port=4369,
controller_key=bytes.fromhex("6ba7b4e9b4656de3cd7edd4c650cdb09"),
) as panel:
info = await panel.get_system_information()
print(info.model_name, info.firmware_version)
asyncio.run(main())
For the panel walkthrough — connect, list zones, react to push events — see the tutorial.
Two wire dialects — TCP/v2 vs UDP/v1
The Omni network module is configurable at the panel keypad to listen on TCP, UDP, or both. Each transport speaks a different wire dialect — OmniClient above handles the TCP path (OmniLink2, the modern wire format used by PC Access ≥ 3); panels configured UDP-only fall back to the legacy v1 protocol with typed RequestZoneStatus / RequestUnitStatus opcodes, no RequestProperties, and streaming name downloads. For those, use OmniClientV1 from the omni_pca.v1 subpackage:
from omni_pca.v1 import OmniClientV1
async with OmniClientV1(
host="192.168.1.9",
controller_key=bytes.fromhex("..."),
) as panel:
info = await panel.get_system_information() # same dataclass as v2
names = await panel.list_all_names() # streaming UploadNames
zones = await panel.get_zone_status(1, 16) # typed status by range
await panel.execute_security_command(area=1, mode=SecurityMode.AWAY, code=1234)
The HA integration picks the right client automatically based on the Transport dropdown in the config flow (TCP vs UDP). See zone & unit numbering for why v1 panels need the long-form RequestUnitStatus for unit indices > 255.
Quick start (Home Assistant)
# Manual install — works on every HA flavour
cd /path/to/your/homeassistant/config/
mkdir -p custom_components
cd custom_components
git clone https://github.com/rsp2k/omni-pca tmp-omni
cp -r tmp-omni/custom_components/omni_pca .
rm -rf tmp-omni
Restart HA, then add the integration via Settings → Devices & Services. You'll need:
- Panel IP / hostname
- TCP port (default 4369)
- ControllerKey as 32 hex chars
Get the ControllerKey from your .pca file using the bundled CLI:
omni-pca decode-pca '/path/to/Your.pca' --field controller_key
The integration creates one HA device per panel plus typed entities for every named object on the controller: alarm_control_panel for areas, light for units, binary_sensor + switch for zones (state + bypass), climate for thermostats, sensor for analog zones and panel telemetry, button for panel macros, and event for the typed push-notification stream. See custom_components/omni_pca/README.md for the full entity + service catalog, or the HA install how-to for the step-by-step.
Without a panel — mock controller
The library ships a stateful MockPanel that emulates the controller side of the protocol over real TCP. Useful for offline development, integration tests, and demos:
from omni_pca.mock_panel import MockPanel
async with MockPanel(controller_key=...).serve(port=14369):
# Connect a real OmniClient to localhost:14369 — full handshake + AES
...
The local dev stack (dev/docker-compose.yml) packages a real Home Assistant container and the mock panel side-by-side so you can click through the integration without touching real hardware. See the dev-stack tutorial.
Tests
uv sync --group ha
uv run pytest -q
351 tests across the protocol primitives, the mock panel, the OmniClient ↔ MockPanel end-to-end roundtrip, and an in-process Home Assistant harness driving the integration via the real config flow + service calls.
Versioning
Date-based (CalVer): YYYY.M.D. Bumped on backwards-incompatible changes. See CHANGELOG.md.
License
MIT. See LICENSE.
Acknowledgments
This client is independent and not affiliated with Leviton or HAI. Protocol details derived from clean-room analysis of the publicly-distributed PC Access installer. The reverse-engineering arc is documented at https://hai-omni-pro-ii.warehack.ing/journey/.